Security Belt and 1 / day Shrink Item: What should I carry around?

[chaoseffect]

So I'm making a new character after a near TPK and I saw the Security Belt and thought "you know I always just get something for stats here, so let's try something new. Oh wow that looks cool."

So if you could cast Shrink Item and then bring whatever you shrunk back as a move action, what would you use it on?

[Titania, the Summer Queen]

A giant stone statue to animate with.
A cannon.
A boulder (to block routes).
Huge pot of lava.

[blackbloodtroll]

Catapult.